Azure Functions
An Azure service that provides an event-driven serverless compute platform.
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Cloud functions - Host instance 'xxxxxxxxxxxxx' failed to acquire host lock lease: Azure.Storage.Blobs:
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sabarish narain
1
Reputation point
I have a function app attached to a storage account with 3 functions with timer triggers that randomly stopped working since last month.
Any pointers to troubleshoot?
Log stream pasted below
---------------------------------
2022-06-09T03:19:21Z [Information] Retrying to start listener for function 'Functions.MonthlyTriggerTotal' (Attempt 18)
2022-06-09T03:19:21Z [Information] Retrying to start listener for function 'Functions.TimerTrigger1' (Attempt 18)
2022-06-09T03:19:21Z [Information] Retrying to start listener for function 'Functions.RecurringExpensesTrigger' (Attempt 18)
2022-06-09T03:19:21Z [Verbose] Host instance 'xxxx-xxx-xxxxxxxxx' failed to acquire host lock lease: Azure.Storage.Blobs: Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.
RequestId:d859920b-901e-0035-40af-7b9e9a000000
Time:2022-06-09T03:19:21.2193397Z
Status: 403 (Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.)
ErrorCode: AuthenticationFailed
Additional Information:
AuthenticationErrorDetail: The MAC signature found in the HTTP request 'xxx-xxxx-xxx-xxxx' is not the same as any computed signature. Server used following string to sign: 'PUT
{count} vote
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MughundhanRaveendran-MSFT 12,481 Reputation points2022-06-10T09:58:47.257+00:00 @sabarish narain , IS your stroage account integrated with Vnet/ network restrictions? How frequently do you see this issue?
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sabarish narain 1 Reputation point
2022-06-10T12:47:55.127+00:00 No network restrictions. They are in broken state now. I believe redeploying them as new function app is the only resolution as of now which is very annoying.
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MughundhanRaveendran-MSFT 12,481 Reputation points
2022-06-14T06:39:57.01+00:00 @sabarish narain , Could you please regenerate the access keys from the Storage account and update the AzureWebJobsStorage app setting value in the Function app? If you are running on consumption/premium, you will have to update the WEBSITE_CONTENTAZUREFILECONNECTIONSTRING app setting as well
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Çiğdem Kadakoğlu 0 Reputation points2024-12-27T09:11:44.0966667+00:00 Hi,
We have a Function App and a Storage Account integrated with VNet and private endpoints. Both the Storage Account and Function App are disabled from the public network, and key access to the Storage Account is disabled. Azure RBAC is being used for authentication.
We got the same error.
Could you please assist in investigating this issue? Any guidance on resolving the authentication failure would be greatly appreciated.
Thanks,
Warm Regards,
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